How do I develop addin for MS Outlook that works with all 1. Outlook 2010 2. Outlook 2007 3. Outlook 2003
I have developed addin that works well with 2010 and 2007 BUT NOT with 2003.
I want something like this that works well with all the above three :)
You need VSTO
(Visual Studio Tools for Office). Here is an article to get you started.
You can also check out Office Development Center
.